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// Copyright (C) 2003 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.
 
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
 
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING.  If not, write to the Free
// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
// USA.
 
// 27.8.1.4 Overridden virtual functions
 
#include <fstream>
#include <testsuite_hooks.h>
 
void test01()
{
  using namespace std;
 
  bool test __attribute__((unused)) = true;
  const char* name = "tmp_sync_1";
 
  filebuf fb;
 
  fb.open(name, ios_base::in | ios_base::out | ios_base::trunc);
  fb.sputn("abc", 3);
 
  fb.pubseekoff(0, ios_base::beg);
  fb.sputc('1');
 
  // Sync can't be used to switch from write mode to read mode.
  fb.pubsync();
 
  filebuf::int_type c = fb.sbumpc();
  VERIFY( c == filebuf::traits_type::eof() );
 
  fb.close();
}
 
int main()
{
  test01();
  return 0;
}